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Mathematics 8 Online
OpenStudy (anonymous):

PLEASE HELP?!?!?! Find the x and y values at the minimum of 2x^2+xy+2y^2+3y+2 And find the x and y values at the maximum of -3x^2+2xy-4y^2+2y+7

OpenStudy (tkhunny):

Have you considered a complete derivative?

OpenStudy (anonymous):

CAN YOU SHOW ME??

OpenStudy (tkhunny):

Yes. Can you show me? You'll need a partial derivative in x and y.

OpenStudy (anonymous):

i don't know how to do it..

OpenStudy (tkhunny):

I did on the other post of the same question.

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